Enable Users to Upload & Download Files

This guide demonstrates how to create a web app that enables users to upload and download files to and from the server in Java.

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Securing Vaadin apps with Spring Security

Getting security right is critical when building web apps. The upside of building a web app is that people can use it wherever they are, on any device. But you need to ensure that only the right people are able to access it, and that they have access to only the features you intended.  In this ...
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Comparing Frontend Frameworks for Spring Boot: React, Angular, and Vaadin (+JHipster)

Spring Boot is a preconfigured version of the Spring framework that makes it easy to create stand-alone, production-grade applications. Spring Boot is a backend framework that has become a major player in the enterprise Java ecosystem. It lets Java developers start building web applications ...

Dynamic Theming in Vaadin Flow

The application with different theme variants Whether for multi-tenancy or user preference, the need to dynamically change the theming of an application is a common business application need. In this post, we show how it’s done using CSS custom properties and HTML attributes. Vaadin 14.6 brought an ...
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Expert Tips for New Java Developers

Even the best were beginners once: We asked long-time Java experts to share their experience and tips to find out what they wish they had known before beginning their Java careers. With Java having been in business for over 25 years now, let’s hear what the professionals had to say. You can find ...
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Java for front-end development in 2021

Vaadin has enabled Java development teams to build full-stack applications, 100% in Java, for over 20 years. With an extensive web component library, powerful abstraction capabilities, the new Collaboration Engine (for real-time collaboration) and Vaadin Fusion (for TypeScript support), Vaadin is ...

Top 5 most common Vaadin performance pitfalls and how to avoid them

A couple of weeks ago I was coding a demo app when it dawned on me that if I was to use my code in a real-world application, it would consume unacceptable amounts of memory once it reached 100 or more concurrent users. Vaadin Flow makes it easy to start coding web applications, even if you have no ...
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What’s new in Java?

Java is still going strong after 25 years! We decided to interview active Java professionals who have used it for years to hear about the new and upcoming features they are most excited about. With JDK 16 around the corner and new community platforms emerging, let’s hear what they had to say. Read ...
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Why do developers use Java in 2021?

Our previous post took a snapshot of the history and current state of Java: Who made it? How many developers does it have? What are they using Java for? This post takes a look at some of the reasons why Java has gained and retained its popularity for over a quarter of a decade. You can use Java for ...
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The State of Java

Java is one of the most popular programming languages, especially for enterprise applications. This post takes a brief look at its long history and where it is today. 25 years of Java The Java Development Kit (JDK) 1.0 was designed by a team lead by James Gosling and released at Sun Microsystems in ...